Startech MSTCDP123HD User Manual
Quick-start guide
MST Hub - DisplayPort over USB-C to 3x DisplayPort
MSTCDP123HD
Installation
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
This device is natively supported in compatible operating systems
and supports plug-and-play installation.
Important operation notes
• The USB-C port on your computer must support DisplayPort over
USB-C (DP Alt mode) in order to work with this MST hub.
Introduction
This MST hub enables a Windows® device that’s equipped with
DisplayPort over USB-C™ (DP alt mode) to connect three DisplayPort
monitors.
Product overview
*actual product may vary from photos
• MST is certied for operation with Microsoft® Windows 10, 8/8.1
and 7 devices.
• MST is currently not supported by other operating systems
such as Mac OS X and Chrome OS™.
• Other operating systems might adopt MST in the
future. Verify MST support with your operating system
manufacturer.
• Operating system support is subject to change. For the
latest requirements, please visit:
www.StarTech.com/MSTCDP123HD.
HDMI
output ports
Integrated USB-C
input cable
Package contents
• 1 x MST hub
Requirements
• 1 x computer with:
• DisplayPort over USB-C video support (DP Alt Mode)
• One of the following operating systems:
• Windows® 10 (32-bit or 64-bit)
• Windows 8 / 8.1 (32-bit or 64-bit)
• Windows 7 (32-bit or 64-bit)
• 3 x HDMI displays with cabling
Operating systems are subject to change. For the latest
requirements, please visit:
www.StarTech.com/MSTCDP123HD.
• After the MST hub has been connected to your computer it may
be necessary to initiate the operation of additional displays from
within your Windows Display Settings.
• The SCAN button resyncs all of the attached displays, and can be
utilized if any of the displays are not detected
• The MST adapter works with HDMI cables up to 15 ft. in length.
• Certain graphics adapters have limited MST support and will only
output to three displays in total. If more than three monitors are
attached, the fourth will be disabled, including built-in laptop
monitors or touchscreen displays.
• MST shares 21.6Gbps of bandwidth across all attached displays.
Higher resolutions can restrict the bandwidth available for the
remaining ports. Please see our guidelines below for determining
the ideal resolution for your setup.
For the latest information, technical specications, and support for
this product, please visit www.StarTech.com/MSTCDP123HD.
Manual Revision: 08/21/2017
Average resolution bandwidth allocation
1920x1080 (High-denition 1080p) @60Hz – 22%
1920x1200 @60Hz – 30%
2560x1440 @60Hz – 35%
2560x1600 @60Hz – 38%
3840x2160 (Ultra HD 4K) @30Hz – 38%
Note: Exceeding 100% will prevent monitors from turning on.
Examples of supported resolution congurations
Screen 1
resolution
1920x1200
@60Hz (30%)
2560x1440
@60Hz (35%)
2560x1600
@60Hz (38%)
3840x2160
@30Hz (38%)
3840x2160
@30Hz (38%)
Screen 2
resolution
1920x1200
@60Hz (30%)
2560x1440
@60Hz (35%)
2560x1600
@60Hz (38%)
2560x1600
@60Hz (38%)
3840x2160
@30Hz (38%)
Screen 3
resolution
1920x1200
@60Hz (30%)
1920x1200
@60Hz (30%)
1920x1080
@60Hz (22%)
1920x1080
@60Hz (22%)
1920x1080
@60Hz (22%)
Total % of
bandwidth
90%
100%
98%
98%
98%
Examples of unsupported resolution congurations
Screen 1
resolution
2560x1600
@60Hz (38%)
3840x2160
@30Hz (38%)
3840x2160
@30Hz (38%)
3840x2160
@30Hz (38%)
Screen 2
resolution
2560x1600
@60Hz (38%)
2560x1600
@60Hz (38%)
2560x1600
@60Hz (38%)
3840x2160
@30Hz (38%)
Screen 3
resolution
1920x1200
@60Hz (30%)
1920x1200
@60Hz (30%)
2560x1440
@60Hz (35%)
3840x2160
@30Hz (38%)
Total % of
bandwidth
106%
106%
111%
114%
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only and do not represent an endorsement of a product or service by StarTech.com, or an endorsement of the product(s)
to which this manual applies by the third-party company in question. Regardless of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby acknowledges that all
trademarks, registered trademarks, service marks, and other protected names and/or symbols contained in this manual and related documents are the property of their respective holders. Microsoft and
Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
USB Type-C™ and USB-C™ are trademarks of USB Implementers Forum.
Chrome OS is a registered trademark of Google Inc.
Technical Support
StarTech.com’s lifetime technical support is an integral part of our commitment to provide industry-leading solutions. If you ever need help with your product, visit www.startech.com/support and
access our comprehensive selection of online tools, documentation, and downloads.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty Information
This product is backed by a two-year warranty.
StarTech.com warrants its products against defects in materials and workmanship for the periods noted, following the initial date of purchase. During this period, the products may be returned for
repair, or replacement with equivalent products at our discretion. The warranty covers parts and labor costs only. StarTech.com does not warrant its products from defects or damages arising from
misuse, abuse, alteration, or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their ocers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive, incidental,
consequential, or otherwise), loss of prots, loss of business, or any pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for the product. Some states do not
allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in this statement may not apply to you.
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